Mary Lou Maher and Mi Jeong Kim (2006) The Impact Of Tangible User Interfaces On Collaborative Design, Proceedings of the Joint CIB W78, W102, ICCCBE, ICCC, and DMUCE International Conference on Computing and Decision Making in Civil and Building Engineering, Montreal, Canada, 14-16 June http://itc.scix.net/cgi-bin/works/Show?w78-2006-tf559